• Red open NKST box showing bottle and aftercare on white background
  • Red NKST box with bottle on white background
  • infographic || Award winning smooth, blocks humidity & eliminates frizz, long lasting smoothness & shine, reduces blow-dry time & increases manageability, results lasts up to 5 months
  • Before and after of a woman with long dark hair — on the right bottom, her hair is frizzy; on the right top, it’s smooth

    Before

    After

  • NKST Video
1 5

NKSTNatural Keratin Smoothing Treatment System

NKST Natural Keratin Smoothing Treatment System

Professionals LOGIN TO PURCHASE

Enjoy up to 5 months of smooth, shiny, manageable hair with our award-winning signature Natural Keratin Smoothing Treatment for sleek strands. Clients looking for smooth, shiny, more manageable hair with the maximum longevity. 

  • Natural Keratin Smoothing Treatment smoothes unmanageable hair and protects it from humidity.
  • Salon professional smoothing system is formulated with proprietary Signature Keratin technology for hair repair and protection.
  • Delivers shine and softness as well as repairs damage for healthier hair.
  • Dramatically reduces blow-dry time.
  • Enhances hair color vibrancy. 
  • Cumulative hair smoothing results.

WHAT IT IS

Enjoy up to 5 months of smooth, shiny, manageable hair with our award-winning signature Natural Keratin Smoothing Treatment for sleek strands.

WHO IT'S FOR

BEST FOR: Clients who want classic, long-lasting smoothing with frizz elimination, luminous shine, and maximum manageability across all hair types.

  • Clients looking for long-lasting, classic smoothing results
  • Eliminating frizz and delivering luminous shine
  • Hair that requires higher iron temperatures
  • All hair types

WHY WE LOVE IT

  • Natural Keratin Smoothing Treatment smoothes unmanageable hair and protects it from humidity.
  • Salon professional smoothing system is formulated with proprietary Signature Keratin technology for hair repair and protection.
  • Delivers shine and softness as well as repairs damage for healthier hair.
  • Dramatically reduces blow-dry time.
  • Enhances hair color vibrancy. 
  • Cumulative hair smoothing results.
View full details
Keratin Complex Treatment Collections

Find out about our keratin treatments.

Our full portfolio of customizable keratin smoothing treatments is designed to make your hair healthier, stronger and smoother.

LEARN MORE

Overall rating: 4.875 / 5 from 72 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

Yes absolutely 💯 love this

"Yes absolutely 💯 love this keratin complex"

— Allison S. (5/5)

Broken pump on 33 oz shampoo bottle

"The pump on the tall shampoo bottle does not work. Contacted Keratin Complex requesting a replacement pump so that I can retrieve the product from the bottle, but I have not received a response. It’s been weeks."

— Nikki L. (1/5)

Keratin Complex

"Love how there's no strong odor, and love that the product does not make a lot of smoke when you blow dry or flat iron the hair. ."

— Joseph G. (5/5)

Frizz Free

"As a professional hairstylist, I appreciate the consistent results this keratin treatment provides. It helps reduce frizz while leaving hair soft, smooth, and easier to manage"

— Sahel S. (5/5)

Not really worth it

"I switched back to KC from Brazilian Blowout and I regretted it. Not worth charging $300 for this treatment that does nothing for the frizz. Very disappointing"

— Bellini C. (2/5)

owner

"always the best"

— Brandon J. (5/5)

Amaazing

"Always a great add on to any service !"

— Crystal J. (5/5)

"Loved it so much i had to order the bigger size! My clients have been loving the results as well!"

— Cynthia (5/5)

"This is the best keratin treatment around"

— sandra (5/5)

Amazing

"Love the Keratine NKST- easy to follow directions and steps, amazing long lasting results."

— Araceli F. (5/5)

Q&A